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RecallGazette

Vehicle problems, recalls & safety intelligence

Mercedes-Benz A 220 2017–2022technical service bulletin

Bulletin LI05.10-P-075373 · NHTSA communication 10225807 · issued Oct 1, 2022

Technical service bulletin
communication type
Engine and Engine Cooling
component
2017–2022
model years
17
vehicle entries

Official summary

Complaint Chirping or tapping noise originating in area of front crankshaft pulley when engine cold. Noise may lessen as engine reaches operating temperature. Attachments File Description M260 noise.mp4 Noise example Cause Harmonics from timing chain drive. Remedy Replace timing chain tensioner with part A2600502000. Note: This noise will not cause damage to the engine or other symptoms. The chain tensioner should only be replaced in the event of a customer complaint.

What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.